namespace CSharpPro._1021;

public class UserServiceImpl : UserService
{
    public void add()
    {
        Console.WriteLine("添加");
    }

    public void delete()
    {
        Console.WriteLine("删除");
    }

    public void update()
    {
        Console.WriteLine("更新");
    }

    public void query()
    {
        Console.WriteLine("查询");
    }
}